Home / 78,894,139.80-118,341,209.70-64,545,232.80

Finding the Fourth Proportional to 78,894,139.80, 118,341,209.70 and 64,545,232.80

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Solution

The fourth proportional to 78,894,139.80, 118,341,209.70 and 64,545,232.80 is: 96,817,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,139.80 : 118,341,209.70 = 64,545,232.80 : x
  2. Step 2: Convert to fraction form
    78,894,139.80/118,341,209.70 = 64,545,232.80/x
  3. Step 3: Cross multiply
    78,894,139.80x = 118,341,209.70 × 64,545,232.80
  4. Step 4: Simplify right side
    78,894,139.80x = 7,638,360,929,920,118
  5. Step 5: Solve for x
    x = 7,638,360,929,920,118/78,894,139.80
  6. Step 6: Final answer
    x = 96,817,849.20

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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.