Home / 124,878,377.32-172,311,602.34-78,435,549.16

Finding the Fourth Proportional to 124,878,377.32, 172,311,602.34 and 78,435,549.16

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Solution

The fourth proportional to 124,878,377.32, 172,311,602.34 and 78,435,549.16 is: 108,228,145.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,878,377.32 : 172,311,602.34 = 78,435,549.16 : x
  2. Step 2: Convert to fraction form
    124,878,377.32/172,311,602.34 = 78,435,549.16/x
  3. Step 3: Cross multiply
    124,878,377.32x = 172,311,602.34 × 78,435,549.16
  4. Step 4: Simplify right side
    124,878,377.32x = 13,515,355,156,177,440
  5. Step 5: Solve for x
    x = 13,515,355,156,177,440/124,878,377.32
  6. Step 6: Final answer
    x = 108,228,145.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.