Home / 78,749,934.80-118,124,902.20-70,459,455.20

Finding the Fourth Proportional to 78,749,934.80, 118,124,902.20 and 70,459,455.20

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Solution

The fourth proportional to 78,749,934.80, 118,124,902.20 and 70,459,455.20 is: 105,689,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,749,934.80 : 118,124,902.20 = 70,459,455.20 : x
  2. Step 2: Convert to fraction form
    78,749,934.80/118,124,902.20 = 70,459,455.20/x
  3. Step 3: Cross multiply
    78,749,934.80x = 118,124,902.20 × 70,459,455.20
  4. Step 4: Simplify right side
    78,749,934.80x = 8,323,016,254,565,282
  5. Step 5: Solve for x
    x = 8,323,016,254,565,282/78,749,934.80
  6. Step 6: Final answer
    x = 105,689,182.80

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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.