Home / 97,357.20-145,331.55-85,547.40

Finding the Fourth Proportional to 97,357.20, 145,331.55 and 85,547.40

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Solution

The fourth proportional to 97,357.20, 145,331.55 and 85,547.40 is: 127,702.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,357.20 : 145,331.55 = 85,547.40 : x
  2. Step 2: Convert to fraction form
    97,357.20/145,331.55 = 85,547.40/x
  3. Step 3: Cross multiply
    97,357.20x = 145,331.55 × 85,547.40
  4. Step 4: Simplify right side
    97,357.20x = 12,432,736,240.47
  5. Step 5: Solve for x
    x = 12,432,736,240.47/97,357.20
  6. Step 6: Final answer
    x = 127,702.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.