Home / 109,034,417.20-163,551,625.80-78,423,415.60

Finding the Fourth Proportional to 109,034,417.20, 163,551,625.80 and 78,423,415.60

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Solution

The fourth proportional to 109,034,417.20, 163,551,625.80 and 78,423,415.60 is: 117,635,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,034,417.20 : 163,551,625.80 = 78,423,415.60 : x
  2. Step 2: Convert to fraction form
    109,034,417.20/163,551,625.80 = 78,423,415.60/x
  3. Step 3: Cross multiply
    109,034,417.20x = 163,551,625.80 × 78,423,415.60
  4. Step 4: Simplify right side
    109,034,417.20x = 12,826,277,122,169,082
  5. Step 5: Solve for x
    x = 12,826,277,122,169,082/109,034,417.20
  6. Step 6: Final answer
    x = 117,635,123.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.