Home / 139,921,813.90-209,875,152.47-42,877,803.20

Finding the Fourth Proportional to 139,921,813.90, 209,875,152.47 and 42,877,803.20

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Solution

The fourth proportional to 139,921,813.90, 209,875,152.47 and 42,877,803.20 is: 64,314,385.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,921,813.90 : 209,875,152.47 = 42,877,803.20 : x
  2. Step 2: Convert to fraction form
    139,921,813.90/209,875,152.47 = 42,877,803.20/x
  3. Step 3: Cross multiply
    139,921,813.90x = 209,875,152.47 × 42,877,803.20
  4. Step 4: Simplify right side
    139,921,813.90x = 8,998,985,482,914,889
  5. Step 5: Solve for x
    x = 8,998,985,482,914,889/139,921,813.90
  6. Step 6: Final answer
    x = 64,314,385.53

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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.