Home / 103,039,509.80-154,559,264.70-72,806,421.80

Finding the Fourth Proportional to 103,039,509.80, 154,559,264.70 and 72,806,421.80

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Solution

The fourth proportional to 103,039,509.80, 154,559,264.70 and 72,806,421.80 is: 109,209,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,039,509.80 : 154,559,264.70 = 72,806,421.80 : x
  2. Step 2: Convert to fraction form
    103,039,509.80/154,559,264.70 = 72,806,421.80/x
  3. Step 3: Cross multiply
    103,039,509.80x = 154,559,264.70 × 72,806,421.80
  4. Step 4: Simplify right side
    103,039,509.80x = 11,252,907,018,846,050
  5. Step 5: Solve for x
    x = 11,252,907,018,846,050/103,039,509.80
  6. Step 6: Final answer
    x = 109,209,632.70

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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.